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Title: Phenomena that influence high ozone concentrations in the Paso del Norte area

This paper summarizes the results of analyses of meteorological and air quality data for the 1996 Paso del Norte Ozone Study. The purpose of these data analyses was to develop an understanding of the significant chemical and physical processes which lead to high concentrations of ozone in the Paso del Norte study region which includes El Paso, TX; Sunland Park, NM; and Juarez, Mexico. This analysis has shown that the high ozone concentrations are a result of slow convective boundary layer growth, reduced convective boundary layer depth, light surface winds, and high morning surface ozone precursor concentrations. Overlying meteorological conditions observed during high ozone episodes include an upstream aloft high pressure system, aloft warming, and weak surface pressure gradients. The analysis has also shown that aloft carryover of ozone and ozone precursors does not significantly contribute to the surface ozone concentration. Furthermore, hydrocarbon and NO{sub x} data, although spatially limited, show that the system is most often NO{sub x} rather than VOC limited.
Authors:
; ; ;  [1] ;  [2]
  1. Sonoma Technology, Inc., Santa Rosa, CA (United States)
  2. EPA, Dallas, TX (United States)
Publication Date:
OSTI Identifier:
679382
Report Number(s):
CONF-980632--
TRN: IM9940%%201
Resource Type:
Conference
Resource Relation:
Conference: 91. annual meeting and exhibition of the Air and Waste Management Association, San Diego, CA (United States), 14-18 Jun 1998; Other Information: PBD: 1998; Related Information: Is Part Of Proceedings of the 91. annual meeting and exhibition. Bridging international boundaries: Clean production for environmental stewardship; PB: [5000] p.
Publisher:
Air and Waste Management Association, Pittsburgh, PA (United States)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; AIR POLLUTION; OZONE; TEXAS; NEW MEXICO; REGIONAL ANALYSIS; AIR POLLUTION MONITORING; ATMOSPHERIC CHEMISTRY; HYDROCARBONS; NITROGEN OXIDES